Gas-purifying apparatus.



- H. BUSGHBI.

GAS PUBIFYING APPARATUS.

nruornon mum rm. 1, 1911.

1,071,875. Pat canted Sept. 2, 1913.

the portions of the HEINRICH BUSCHEI, OF IBOCHUM, GERMANY.

' eas-rmurrme arrm'rus.

Specification of Letters Intent.

Patented Sept. 2, 1913.

Application filed February 1, 1911. Serial No. 605,989.

To all whom, it may concern: 4

Be it known that I, HEINRICH BUSCHEI, a. subject of the Emperor ofGermany, residing in Bochum, Westphalia, Prussia, Germany, have inventeda certain new and useful Improvement in Gas-Purifying Apparatus, ofwhich the following is a true an exact description, reference being hadto the accompanying drawings, which form a part thereof.

My present invention relates to apparatus suitable for use in carryingout the process of separating tar from the hot gases resulting of coal,lignite, peat, etc., in which tar, tarry gas liquor, or both, aresprayed into the hot gases. In carrying out this process, the tar, tarrygas liquor, or mixture of these materials has been sprayed into the hotgas by means of injectors, which serve also as means for aiding inmoving the gas through the system of conduits and chambers in which itis treated. A drawback to the use of such apparatus, which has beenfound to exist, is that the dimensions and capacity of a single sprayinjector device is limited and cannot be exceeded with satisfactoryoperation, and where the volume of gas treated is such that it cannot behandled with a single spray injector, it has been attempted to employtwo or more such injectors, connected in parallel. It is difficult todivide the duty performed by the different injectors equally, and tomaintain uniformity in the temperature and pressure conditions of gasacted upon by the different injectors, and" such uniformity is highlydesirable for the efficient carrying out of this process of gaspurification. Furthermore, with such injector apparatus, as haveheretofore been employed, the adaptability of the injectors to thefluctuations in the quantity of gas treated has been imperfect with a.correspondingly unfavorable influence on the efficiency of the process.

One main object of the present invention is to provide an injectorapparatus, suitable for use forthe purpose above specified, andembodying a number of injector nozzles so relatively arranged as tooperate in a uniform manner.

Another main object is to so arrange these injector nozzles, that one ormore may be cut out of service without disturbmgthe from the destructivedistillation casing body receiving through the port 13'', tar, tarry gasliquor, or mixture, to be sprayed into the gas.

others when a decrease in the amount of gas to be treated makes areduction in the number of spray jets desirable.

A third object of the invention is the production of an injectorconstruction, which readily permits the adjustment of each individualinjector nozzle, and-a fourth object of the invention is the provisionin an ini jector construction of the kind specified, of simple andeffective means for showing the pressure difl'erence of the gas at theinlet and outlet sides of the injector apparatus, thereby facilitatingthe adjustment of the injector mechanism to produce the desired pressuredifference.

The invention consists in certain features of construction andarrangement, pointed out in the claims annexed to and forming a part ofthis specification. For a better understanding oi. the invention,however, reference should be had to the accompanying drawingsanddescriptive matter, in which I have illustrated one form in which theinvention may be embodied.

Of the drawings, the one figure of the drawing is an elevation of theinjector apparatus. partly in section.

The injector apparatus comprises :1 casing, consisting of chamberedbodies A and D. The chamber A in the body A is open at one end A. Thewall of the chamber A has formed in it at one side, openings A in whichare secured the ends of the outlet or mixing nozzles C of the injectorD.These aresurrounded by and open into the pipe or chamber B, to which thecasing body A is connected.' In its opposite side, the casing A isformed with sleeves A projecting into the chamber A and surroundingpassages A, coaxial with the passages A To the opposite side of thecasing body A, from that to which the pi be B is connected, is securedthe formed with a chamber D,

The injector spray nozzle devices, of which there is one in alinementwith each pressure outlet nozzle C, may be alike and are shown as being,except in the matter of size, the right hand in ector, as shown in thedraw,- ing is large in diameter and of eater ca: pacity than the other.Each injector com prises a support F secured to the casingD and formedwith a. portion extendingmm rior.

the chamber D through an aperture in line with the apertures A and A.This portion comprises, arms F which form a slotted guide for a sleeveG, the latter being slotted at G to permit the passage of the fluid fromthe chamber D proper into its inte- Each sleeve G is formed at its innerend, which projects into the chamber A beyond the endof thecorresponding sleeve A, with a conical discharge aperture G*. At itsinner end also, each sleeve G is formed with a valve disk G for closingthe inlet of the corresponding pressure nozzle C,

when it is desired to cut the injector out of service, as hereinafterdescribed. Each sleeve G 1s formed at its outer ends wlth the lugs Gwhich project between the arms F and prevent the sleeve G from rotating.Beyond the outer ends of the slots G each sleeve G is internallythreaded to receive an externally threaded collar H formed on a spindleH which passes through the corresponding support F, and, on the innerside of the collar H is extended to carry the tubular spray nozzle partH. A bracket or arm F carried by each support F has journaled into it avhandwheel I, which is internally threaded to receive the externallythreaded portion of the corresponding stem H. At its extreme outer end,eac spindle H has a handwheel H secured to it by means of which thespindle may be rotated.

\Yith the apparatus disclosed, the hot gas to be treated passes into thegas chamber A of the apparatus, through the open end A, from the gascollecting mains or the like. The tar, tarry gas liquor, or both, isforced into the chamber D through the port DP, under pressure, from acentrifugal pump, elevated reservoir, or the like. \Vith the apparatusin the condition shown in the drawing, the fluid material under pressurein the chamber D passes through the slots G to the interior of eachsleeve G, except the right hand one. and passes out of the sleeve in theform of a spray, partly through the annular space between the nozzlepart H and the wall of the conical passage G, and partly through thelateral inlets and axial discharge opening formed in the nozzle part H.The tar, tarry gas liquor, or mixture, thus issuing in spray jets fromthe ends of the sleeves G, passes into the corresponding outlet ormixing nozzles C, drawing with it the hot gas from the chamber A nderthe ten'iperature and pressure conditions thus produced within andbeyond the nozzles C, the tar in the material injected into the gas, aswell as the tar contained in the hot gases as they enter the chamber Aare separated from the gases.

The efficient carrying out of this process requires the maintenance of adefinite pressure difference between the pressure of the downward gas inchamber A and the pressure in the pipe or chamber B. The manometer J,connected as shown, forms a simple and definite means of determiningthis pressure difference actually existing between the chambers A and B,Minor fluctuations in the Pressure difference, shown by the manometer J,may be corrected by rotating the handwhecls H and correspondinglyrestricting or enlarging the area of the discharge orifices at the lowerend of the sleeves G. Greater fluctuations in this pressure difference,corresponding to substantial fluctuations in the amount of gas enteringthe chamber A may be prevented or corrected by increasing or decreasingthe number of spray jets in operation, and the fact that the injectorsmay be of difl'erent capacities, increases the flexibility of theregulation thus had. In the construction shown, each of the separate,spray injectors may be withdrawn from service by rotating the handwheelI, to move the corresponding sleeve G-downward until the val've Gcarried at its lower end closes the mouth of the corresponding pressurenozzle C, as is the case with the right hand spray nozzles, as shown inthe drawing. The downward movement of the sleeve, when the valve G ismoved against its seat, closes communication between the interior of thesleeve and the chamber D, since the slots G pass into the stationarysleeve A.

With the apparatus disclosed, it is apparent that the different sprayinjectors, when properly adjusted, will operate uniformly, since the gaspressure at the discharge ends of the sleeves G, in the common chamber Aare alike for each injector, and the pressure at which the tarrymaterial enters each injector sleeve G, is the same. This uniformity inoperation and equality in the distribution of the load carried by thevarious injectors in operation, is in no Wise affected by cutting one ormore of the injectors out of operation.

\Vhile in accordance with the provisions of the statute I haveillustrated Sl-Ilt described the best form of my invention IlOW known tome, it will be readily apparent to those skilled in the art that changesmay be made in the apparatus without departing from the spirit ofmyinvention.

What I claim is:

1. Apparatus for injecting tar material into gas, comprising a singlegas chamber, a single tar material chamber, and a plurality of tarspraying injectors of different capacities, opening from said tarmaterial chamber into said gas chamber.

2. Apparatus for injecting tar material into gas. comprising a gaschamber, a gas conduit connected to said chamber by outlet passages fromthe latter, a tar material chamber, a plurality of adjustable ta-rspraying injectors opening from said last menpressures, in said tionedchamber into said gas chamber and a manometer tube connecting said gaschaminto gas, comprising a gas chamber, a gas conduit connected to saidchamber by outlet passages from the latter, a ta'r material chamber, aplurality of adjustable tar spraying injectors opening from lastmentioned chamber into said gas chamber, and means for indicating thedifference between the gas chamber and in said conduit; I i

4. In combination, a casing formed with two chambers, separated, by apartition having formed in it'a plurality of apertures, a plurality ofspraying injectors projecting into one .of sald' chambers from the otherchamber, one through each of said apertures, and a plurality of outletnozzles leading away from said one chamber, one in line with each ofsaid apertures, whereby fluid forced from said other chamber throughsaid injectors will pass into said nozzles and draw with it fluid fromsaid one chamber.

5. In combination, a casing formed with two chambers, separated by apartition having formed in it a plurality of apertures, a plurality ofspraying injectors projecting into one of said chambers from the otherchamber, one through each of said apertures, and a-plurality of outletnozzles leading away from said one chamber, .one in line with each ofsaid apertures, whereby fluid 'forced from said other chamber throughsaid injectors will pass into said nozzles and draw with it fiuidfromsaid one chamber, each of said injectors being axially movable andadapted,.when moved, to close the cor responding nozzle and cut oil theflow of fluid from said other chamber through that injector- 6. Incombination, a casing formed with two chambers, separated. by apartition having formed in it a plurality of apertures, a

plurality of spraying injectors projecting into one of said chambersfrom the other chamber, one through each of saidapertures, and aplurality of outlet nozzles leading away from said one-chamber, one inline with each ofsaid apertures, whereby fluid forced from said otherchamber through said injectors will pass into said nozzles and draw withit fluid from said one chamber, each of said injectors having adjustablepI'OVlSlOIlS tor regulating the flow of fluid through it.

7. In combination, a casing formed with two chambers, separated by apartition, ha ving formed in it a plurality of apertures, a plurality ofspraying injectors projecting into one of said chambers from the otherchamber, one through each of said apertures, and a plurality of outletnozzles leading away from Suid'one chamber, one in line with each ofsaid apertures, whereby fluid forced from said other chamber throughsaid injectors, will pass into said nozzles

